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31 Cards in this Set

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  • Back
STEP-UP TRANSFORMER
an electrical transformer that incresases the voltage of a power line.
ELECTRIC FIELD
an area surrounding an electron that exert a force on anything nearby with an electric charge
OHM
unit for measuring resistance
POTENTIAL DIFFERENCE
the difference in electric potential energy between 2 different points.
STEP-DOWN-TRANSFORMER
electrical transformer that decreases the voltage of a power line
WET CELL
power source that generates electric current by a chemical reaction using a liquid electrolyte
INSULATOR
a material that does not allow heat or electrons to move through it easily.
WHAT IS POTENTIAL DIFFERENCE MEASURED IN?
volts
VOLTAGE
difference in electrical potential.
COULOMB
the charge carried kby 6.24 billion billion electrons
CIRCUIT
a closed path through which electrons flow
WHAT AND WITH WHAT IS VOLTAGE MEASURED IN
volts, voltmeter
PARALLEL CIRCUIT
an electrical circuit where the current flows thrugh more than one path. If one path is interupted, current will still flow through the other paths.
OHM'S LAW
states that potential difference equals current multiflied by resistance
GROUNDED
electrically connected to earth, either directly or through a wire or other metal
DRY CELL
A power source that acts as an electron pump and generates electric current by a chemical reacion; uses thick, pasty electroyte.
INDUCTION
electrically charging an object or creating an electrical current in it, without physically touching it.
WHERE IS THE ELECTRIC FIELD STRONGEST AND WEAKEST?
strongest nearest the electron and weakens with distance
KILOWATT HOUR
the unit of electrical energy
WHAT IS ELECTRICAL POWER MEASURED IN?
watts or kilowatts
CIRCUIT BREAKER
device that protects an electrical circuit. If too much current flows. the device opens the cricuit and stops the circuit.
ELECTRICAL POWER
the rate at which electrical energy is converted to another form of energy,
WHAT IS RESISTANCE MEASURED IN?
ohm's
STATIC ELECTRICITY
the net buildup of electric charges on an object
VOLT
unit for measuring electrical potential energy
ELECTROSCOPE
A device containing 2 suspended metal leaves in a jar that move apart when charged; used to detect the presence of electric charges.
CONDUCTOR
A MATERIAL THAT ALLOWS ELECTRONS TO MOVE EASILY THROUGH IT.
AMPERE
unit of measuring current, the rate of flow of electrons in a circuit.
SERIES CIRCUIT
an electriacl circuit where the current has only 1 path. If the path is interupted in any point, it stops current flow in the entire circuit.
CURRENT
the flow of electrons through a wire or any conductor, measured in amperes with an ammmeter.
RESISTANCE
the oppostion to the flow of electrons through a conductor.